rgw: don't make domain_root pool the same as zone root
rgw: don't make domain_root pool the same as zone root

These are supposed to be separate pools.

Signed-off-by: Josh Durgin <51652c783f70f5b272ebd02f1fd20d3af7a2449f@inktank.com>

ceph/teuthology,ktdreyer/teuthology,t-miyamae/teuthology,SUSE/teuthology,dreamhost/teuthology,ivotron/teuthology,caibo2014/teuthology,dreamhost/teuthology,tchaikov/teuthology,tchaikov/teuthology,ceph/teuthology,zhouyuan/teuthology,SUSE/teuthology,t-miyamae/teuthology,ktdreyer/teuthology,michaelsevilla/teuthology,SUSE/teuthology,zhouyuan/teuthology,robbat2/teuthology,ivotron/teuthology,dmick/teuthology,caibo2014/teuthology,dmick/teuthology,michaelsevilla/teuthology,yghannam/teuthology,yghannam/teuthology,dmick/teuthology,robbat2/teuthology